1891. : Zoology. : 745 
center of distribution I am not positive ; but I think that it will be in 
tierra caliente, at least during the winter months. The semi-hiberna- 
tion of the specimens taken point toward this opinion, for I am inclined 
to believe that here, where ten miles of travel may bring an entire 
change of climate, the bats, as a rule, prefer to migrate rather than to 
hibernate. 
These bats, when first taken, were entirely motionless ; but in a few 
moments the heat of my hand revived them, whereupon they occasion- 
ally gave voice to a faint, high-pitched squeak,—so high in pitch that 
I fancy it lacked little of being beyond the range of the ordinary 
human ear. They went into none of those ecstasies of rage seen in 
many of the larger species that bite Whatever comes within range of 
their mouth, be it their own foot or wing. One, found in a compara- 
tively dry part of a cave, was completely beaded over with dew, indi- 
cating, I think, that it had passed at least several days since taking 
flight. When taken into the daylight they closed their eyes and 
covered them over with the carpal portion of their wings. 
VESPERUGO VERECRUCIS, sp. nov.—All six specimens were indistin- 
guishable one from another in point of color. The following color- 
description is taken from a dried skin, whereas all the rest of the 
description is taken from a specimen preserved in alcohol. 

Vesperugo verecructs. 
Hairs of back clove-brown for basal half, followed by two equal 
zones respectively broccoli-brown and clove-brown ; some of hairs 
furthermore tipped with light Vandyke-brown, giving a decidedly 
“‘rusty’’ tone to the back. Ventral surface, bases of hairs slightly 
lighter than those of back, followed by light hair-brown, producing a 
grayish or smoky effect. 
Wing membranes naked, except a very limited area on upper surface 
along sides of body, not exceeding three or four millimeters in width ; 
and on lower surface, the area included between a line passing from 
Pig 1 
